In South Lake Union there are 4 residential Fiber providers covering 97.07% of the neighborhood. The average home can get speeds up to 2,000 Mbps. Note that we may have a financial relationship with some of the providers below. This does not influence rankings, and helps us provide high-quality detailed information for free.
This page contains all Fiber internet providers in South Lake Union, Seattle, WA.
To see availability maps for all providers including fiber, cable, DSL, and more in South Lake Union, Seattle, WA please click below.
South Lake Union, Seattle, WA Availability Maps
Fiber Internet Service Providers in South Lake Union
Data updated 11/14/2025, based on FCC data from 12/31/2024. This is the most current data available as of .
To avoid wasting your time, providers with less than 1% coverage in South Lake Union are not shown.
South Lake Union Satellite TV & Internet Providers
DISH Satellite TV
DIRECTV Satellite TV
Not sure whether to choose Dish or DIRECTV? For most people most of the time we recommend DISH. But click here to learn more.
Viasat Satellite Internet
Where in South Lake Union is fiber internet available?
Fiber Internet Availability Key
Fiber is available in 97.07% of South Lake Union. Areas in green have fiber internet service, where areas in yellow or red may not. The most widely available provider is Astound Broadband. Call one of the companies with service in South Lake Union above to see who has service at your home.
How fast is fiber internet in South Lake Union?
The map below shows maximum fiber internet speeds by area in South Lake Union.
Fiber Internet Speed Key
The average South Lake Union home can get up to 2,000 Mbps on their fiber internet plan. The fastest fiber download speed in the neighborhood is 2,000 Mbps, which 97.07% of residents can get.
Is fiber the fastest internet I can get in South Lake Union?
The fastest internet for you may vary based on where in South Lake Union you live. In general, cable competes most often with fiber in the neighborhood.
- Fiber is the fastest internet type for 95.54% of South Lake Union homes.
- Cable is fastest for 4.04% of the neighborhood.
- DSL is fastest for less than 1%.
- Fixed wireless is fastest for less than 1%.
- Satellite internet may be the only option for less than 1% of South Lake Union homes.
Fiber Providers in Depth
Below you'll find which TV and internet providers offer service in South Lake Union, along with details on where in South Lake Union and at what speeds.
Astound Broadband Fiber in South Lake Union, Seattle, WA
Astound Broadband fiber coverage
About 95.54%, or 12,783 people, have Astound Broadband fiber internet available to them in the neighborhood. The company covers the entire South Lake Union area. Astound Broadband is one of the largest internet service providers internet service providers in the US, with internet service available in most of South Lake Union.
Astound Broadband fiber download speeds
Astound Broadband is the fastest when comparing download speeds to all other internet providers in South Lake Union. Versus other fiber providers in the area, Astound Broadband fiber is the fastest. There are no different maximum speeds throughout South Lake Union. The fastest plan anyone in South Lake Union can order from Astound Broadband goes up to 2,000 Mbps, and all South Lake Union customers can get this speed.
Show all download speeds
- 100.0% up to 2,000.0 Mbps
Astound Broadband fiber upload speeds
In South Lake Union download speeds tend to be equal to than upload speeds for Astound Broadband fiber. Compared to other ISPs, Astound Broadband is the fastest where upload speeds are concerned, and the fastest compared to other South Lake Union fiber providers. Astound Broadband offers no different upload speeds across the neighborhood. The fastest upload speed available to anyone from this ISP in South Lake Union is up to 2,000 Mbps, which is available to everyone covered.
Show all upload speeds
- 100.0% up to 2,000.0 Mbps
Quantum Fiber Fiber in South Lake Union, Seattle, WA
Quantum Fiber fiber coverage
About 77.38%, or 10,354 people, have Quantum Fiber fiber internet available to them in the neighborhood. The company covers the entire South Lake Union area. Quantum Fiber is one of the largest internet service providers internet service providers in the US, with internet service available in much of South Lake Union.
Quantum Fiber fiber download speeds
Quantum Fiber is above average when comparing download speeds to all other internet providers in South Lake Union. Versus other fiber providers in the area, Quantum Fiber fiber is below average. There are 3 different maximum speeds throughout South Lake Union. The fastest plan anyone in South Lake Union can order from Quantum Fiber goes up to 2,000 Mbps, the slowest package only goes up to 940 Mbps, and the neighborhood-wide average maximum speed for South Lake Union customers is up to 1,094 Mbps.
Show all download speeds
- 14.5% up to 2,000.0 Mbps
- 0.9% up to 1,000.0 Mbps
- 84.6% up to 940.0 Mbps
Quantum Fiber fiber upload speeds
In South Lake Union download speeds tend to be faster than than upload speeds for Quantum Fiber fiber. Compared to other ISPs, Quantum Fiber is above average where upload speeds are concerned, and below average compared to other South Lake Union fiber providers. Quantum Fiber offers 2 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Lake Union is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 940 Mbps. On average, Quantum Fiber customers can get speeds up to 949 Mbps.
Show all upload speeds
- 15.4% up to 1,000.0 Mbps
- 84.6% up to 940.0 Mbps
Centurylink Fiber in South Lake Union, Seattle, WA
Centurylink fiber coverage
About 63.52%, or 8,499 people, have Centurylink fiber internet available to them in the neighborhood. The company covers the entire South Lake Union area. Centurylink is one of the largest internet service providers internet service providers in the US, with internet service available in a majority of South Lake Union.
Centurylink fiber download speeds
Centurylink is average when comparing download speeds to all other internet providers in South Lake Union. Versus other fiber providers in the area, Centurylink fiber is the slowest. There are 3 different maximum speeds throughout South Lake Union. The fastest plan anyone in South Lake Union can order from Centurylink goes up to 1,000 Mbps, the slowest package only goes up to 100 Mbps, and the neighborhood-wide average maximum speed for South Lake Union customers is up to 970 Mbps.
Show all download speeds
- 83.1% up to 1,000.0 Mbps
- 14.5% up to 940.0 Mbps
- 2.4% up to 100.0 Mbps
Centurylink fiber upload speeds
In South Lake Union download speeds tend to be faster than than upload speeds for Centurylink fiber. Compared to other ISPs, Centurylink is above average where upload speeds are concerned, and below average compared to other South Lake Union fiber providers. Centurylink offers 4 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Lake Union is up to 1,000 Mbps. Some customers have slower plan choices, which only go up to 100 Mbps. On average, Centurylink customers can get speeds up to 893 Mbps.
Show all upload speeds
- 83.1% up to 1,000.0 Mbps
- 4.2% up to 940.0 Mbps
- 10.4% up to 200.0 Mbps
- 2.4% up to 100.0 Mbps
XFINITY from Comcast Fiber in South Lake Union, Seattle, WA
XFINITY fiber coverage
About 37.94%, or 5,076 people, have XFINITY fiber internet available to them in the neighborhood. The company covers the south, east, southeast, west, northeast, and central South Lake Union area. XFINITY is one of the largest internet service providers internet service providers in the US, with internet service available in some of South Lake Union.
XFINITY from Comcast fiber download speeds
XFINITY is above average when comparing download speeds to all other internet providers in South Lake Union. Versus other fiber providers in the area, XFINITY fiber is above average. There are 3 different maximum speeds throughout South Lake Union. The fastest plan anyone in South Lake Union can order from XFINITY goes up to 2,000 Mbps, the slowest package only goes up to 1,000 Mbps, and the neighborhood-wide average maximum speed for South Lake Union customers is up to 1,652 Mbps.
Show all download speeds
- 59.1% up to 2,000.0 Mbps
- 30.5% up to 1,200.0 Mbps
- 10.4% up to 1,000.0 Mbps
XFINITY from Comcast fiber upload speeds
In South Lake Union download speeds tend to be faster than than upload speeds for XFINITY fiber. Compared to other ISPs, XFINITY is above average where upload speeds are concerned, and the slowest compared to other South Lake Union fiber providers. XFINITY offers 4 different upload speeds across the neighborhood, so your internet plan's upload speed may vary by neighborhood . The fastest upload speed available to anyone from this ISP in South Lake Union is up to 2,000 Mbps. Some customers have slower plan choices, which only go up to 35 Mbps. On average, XFINITY customers can get speeds up to 826 Mbps.
Show all upload speeds
- 32.0% up to 2,000.0 Mbps
- 10.9% up to 1,000.0 Mbps
- 26.6% up to 250.0 Mbps
- 30.5% up to 35.0 Mbps
South Lake Union Fiber by Area
This information is most helpful to those looking for homes or considering moving to South Lake Union or any of the areas nearby.
How does fiber internet in South Lake Union compare to the rest of Seattle?
Fiber internet speeds in South Lake Union are much faster versus the average speeds in Seattle: 0.00 Mbps in Seattle versus 2,000 Mbps in the neighborhood. The city has similar fiber availability compared to the neighborhood. Average fiber coverage in Seattle is 0.00% versus 97.07% in South Lake Union.
What zip codes have fiber internet?
Fiber internet coverage varies by zip code and neighborhood. Some examples in or around South Lake Union are shown below. You can enter any zip code here to see TV and internet providers by zip code.
What does fiber internet look like in other neighborhoods?
Below are neighborhoods nearby and with similar populations. This comparison can be useful if living somewhere with fast internet is important to you.
Nearby Neighborhoods
- Belltown, Seattle, WA: less fiber coverage, similar speeds
- Uptown, Seattle, WA: less fiber coverage, faster speeds
- Westlake, Seattle, WA: less fiber coverage, faster speeds
- Capitol Hill, Seattle, WA: less fiber coverage, faster speeds
- First Hill, Seattle, WA: less fiber coverage, slower speeds
- Pioneer Square, Seattle, WA: less fiber coverage, faster speeds
- Eastlake, Seattle, WA: more fiber coverage, faster speeds
- Central District, Seattle, WA: less fiber coverage, faster speeds
- Queen Anne, Seattle, WA: less fiber coverage, faster speeds
- International District, Seattle, WA: less fiber coverage, faster speeds
Neighborhoods with Similar Populations
- South Ironbound, Newark, NJ: less fiber coverage, faster speeds
- Brewerytown, Philadelphia, PA: less fiber coverage, slower speeds
- Brooklawn-St. Vincent, Bridgeport, CT: more fiber coverage, faster speeds
- Brookline, Pittsburgh, PA: more fiber coverage, slower speeds
- Brooklyn-Curtis Bay, Brooklyn, MD: less fiber coverage, slower speeds
- Bryant Terrace, Malden, MA: more fiber coverage, slower speeds
- Buckeye-Shaker, Cleveland, OH: less fiber coverage, faster speeds
- Cambridgeport, Cambridge, MA: less fiber coverage, slower speeds
- Downtown Paterson, Paterson, NJ: less fiber coverage, faster speeds
- Sky Line, San Diego, CA: less fiber coverage, faster speeds